209054220 has 24 divisors (see below), whose sum is σ = 585351984. Its totient is φ = 55747776.

The previous prime is 209054213. The next prime is 209054239. The reversal of 209054220 is 22450902.

209054220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1742059 + ... + 1742178.

It is an arithmetic number, because the mean of its divisors is an integer number (24389666).

Almost surely, 2^209054220 is an apocalyptic number.

209054220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

209054220 is an abundant number, since it is smaller than the sum of its proper divisors (376297764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209054220 is a wasteful number, since it uses less digits than its factorization.

209054220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484249 (or 3484247 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 209054220 is about 14458.7074111070. The cubic root of 209054220 is about 593.4985281163.

The spelling of 209054220 in words is "two hundred nine million, fifty-four thousand, two hundred twenty".